Damaging Winds in Montana, June 9, 2001

Name: Damaging Winds in Montana, June 9, 2001
Start: 2001-06-09T01:45
End: 2001-06-09T01:50
Location: Montana

June 9, 2001 · NWS MSO · 3 events in 2 counties and zones

Severe thunderstorm developed over northern Ravalli County and passed through central Missoula County. Strong winds caused numerous large tree branches to be blown down in northern Ravalli County.

Where it happened

Every event with a place to put it. Tap one for its entry below.

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The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS MSO wrote it up.

Severe thunderstorm developed over northern Ravalli County and passed through central Missoula County. Strong winds caused numerous large tree branches to be blown down in northern Ravalli County. Storm intensified over Missoula County were wind gusts up to 58 mph caused road sign to be blown over and numerous large tree branches to be broken off of trees.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before the first event at Jun 8, 8:06 PM MST, 5 hours 39 minutes earlier.

Area forecast discussion, Jun 8, 8:06 PM MST, 5 hours 39 minutes before

WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
906 PM MDT FRI JUN 8 2001

WILL UPDATE ZONES AND WEST MONTANA SFP. THUNDERSTORMS HAVE JUST
ABOUT DIED OFF ACROSS WESTERN MONTANA AS THE ATMOSPHERE CONTINUES TO
STABILIZE. SOMEWHAT MORE ORGANIZED ACTIVITY SKIRTING EXTREME WESTERN
SECTIONS OF CWA...CLOSER TO PROXIMITY OF SHORTWAVE APPROACHING OREGON
COAST...SOME OF WHICH SHOULD MAKE IT INTO NORTHWEST MONTANA BEFORE
DISSIPATING LATER TONIGHT. DYNAMICS REMAIN FOCUSED OVER CENTRAL IDAHO
OVERNIGHT AND INTO NORTHWEST MONTANA LATE. WILL KEEP MENTION OF
SHOWERS AND ISOLATED THUNDER NW MONTANA AND NC IDAHO OVERNIGHT...BUT
WILL DROP FROM REMAINING ZONES. SULLIVAN

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

3 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Missoula

When: June 9, 1:45 AM MST
Where: Missoula County, Lolo
Measured: 51 kt (59 mph)
Reported by: NWS STORM SURVEY
Coordinates: 46.783, -114.117

Thunderstorm Wind, Ravalli

When: June 9, 1:45 AM MST to 1:50 AM MST
Where: Ravalli County, Stevensville
Measured: 51 kt (59 mph)
Reported by: LAW ENFORCEMENT
Coordinates: 46.500, -114.083

Thunderstorm Wind, Missoula

When: June 9, 1:50 AM MST
Where: Missoula County, Missoula
Measured: 51 kt (59 mph)
Reported by: LAW ENFORCEMENT
Coordinates: 46.883, -114.000

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Montana in 2001 Every state in 2001 This day in weather history Warnings in Montana, June 2001

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5248885, 5248887, 5248886.